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From "Xiaoming Shi (JIRA)" <j...@apache.org>
Subject [jira] Created: (JCR-2914) Copying data from inputStream to OuputStream needs appropriate buffer size
Date Sun, 13 Mar 2011 02:41:59 GMT
Copying data from inputStream to OuputStream needs appropriate buffer size
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                 Key: JCR-2914
                 URL: https://issues.apache.org/jira/browse/JCR-2914
             Project: Jackrabbit Content Repository
          Issue Type: Bug
          Components: jackrabbit-jcr-server
    Affects Versions: 2.2.2
            Reporter: Xiaoming Shi


In the file:

./jackrabbit-2.2.2/jackrabbit-jcr-server/src/main/java/org/apache/jackrabbit/server/io/IOUtil.java
  line:80

The buffer size is fixed as 8192.

To copy 10M data with 8192-byte buffer it takes 98,905,252 nano-second, while it takes 37,642,842
nano-second with a 81920-byte buffer

We need to find an appropriate buffer size based on the size of the InputStream.

This is similar to the Apache Bug:https://issues.apache.org/bugzilla/show_bug.cgi?id=32546





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